Lamp



FIG. 1 is a top plan view of an ornamental design for a lamp;

FIG. 2 is a bottom plan view of the lamp of FIG. 1;

FIG. 3 is a front elevational view of the lamp of FIG. 1;

FIG. 4 is a rear elevational view of the lamp of FIG. 1;

FIG. 5 is a left side elevational view of the lamp of FIG. 1; and

FIG. 6 is a right side elevational view of the lamp of FIG. 1.

FIG. 7 is a bottom perspective view of the lamp of FIG. 1; and,

FIG. 8 is a top perspective view of the lamp of FIG. 1.

The dash-dash-dash broken lines are included for the purpose of illustrating portions that form no part of the claimed design. 

CLAIM The ornamental design for a lamp, as shown and described. 